Car Problems ›› 2005 MERCURY MONTEGO Problems

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2005 MERCURY MONTEGO Defect Investigation Open 2011/05/11 - Close 2013/02/07 NHTSA #: PE11018
VEHICLE SPEED CONTROL: On November 29, 2012, Ford Motor Company (Ford) initiated Customer Satisfaction Program 12N03 to extend warranty coverage terms for repair of engine idle RPM surge caused by throttle body deposits in all model year (MY) 2005 through 2007 Ford Freestyle, Five Hundred and Mercury Montego vehicles.The program extends the coverage for up to 10 years of service or 150,000 miles from the warranty start date of the vehicle (all vehicles are eligible for the program through May 31, 2013, regardless of mileage).Dealers will repair vehicles exhibiting the condition by removing and cleaning the throttle body and reprogramming the PCM with software containing an updated idle speed control strategy.According to Ford, some of the affected vehicles may experience momentary, intermittent engine idle RPM surge (idle flare) when stopped or during low speed driving maneuvers such as in a parking lot or driveway.Unstable idle speed control (dips and flares) around the target engine speed (700 rpm) can occur in vehicles with deposit build-up in the throttle body when the system adjusts engine speed in response to changes in engine load, typically from power steering application or air-conditioner compressor cycling.Idle speed control logic is only active at vehicle speeds below 3.5 mph and when the accelerator pedal is not applied.Ford testing of a vehicle with a worst case throttle body measured a maximum idle flare of 1360 RPM lasting approximately 1 second, which Ford indicated was consistent with system design to limit vehicle speed and acceleration in idle control mode.Ford indicated that the test vehicle was held in place with normal brake effort and that vehicle speed remained under 4 mph without the brake pedal applied.In addition to throttle body deposit accumulation, symptoms associated with the condition may include Check Engine lamp illumination and diagnostic trouble codes (DTCs) P0505, P0506 or P061B.Ford attributed the surge condition to changes in idle air flow resulting from the progressive buildup of deposits in the throttle body from normal Positive Crankcase Ventilation (PCV) system operation.This condition was not adequately compensated for in the original Powertrain Control Module (PCM) calibration.Ford issued a technical service bulletin on August 15, 2011 (TSB 11-8-5), releasing an updated powertrain control calibration for vehicles with CVT transmissions.On October 19, 2011, Ford issued a second bulletin (TSB 11-10-21) superseding TSB 11-8-5 and including updated powertrain control calibration for vehicles with 6-speed transmissions.Prior to Ford issuing the TSB’s, owner’s experiencing the alleged defect either received no repairs, if dealers could not duplicate the condition, or had the throttle body cleaned or replaced, which only provided temporary correction until the throttle deposit build-up returned.Ford’s revised powertrain calibrations appear to be effective remedies for the idle instability caused by build-up of throttle body deposits.However, even after the TSB’s were released, many owners experiencing the condition continued to have difficulty with proper diagnosis and repair as dealers were often either unable to duplicate the condition or were unfamiliar with the new repair procedures.Ford's new program addresses those concerns.NHTSA's testing and complaint analysis indicate that the idle speed control issue in the subject vehicles can only occur at very low speeds, are very brief events, are easily controlled by moderate brake pedal forces and result in minor increases in vehicle speed even with no braking.This investigation is closed.The closing of this investigation does not constitute a finding that a safety-related defect does not exist.For additional information regarding this investigation, see complete closing resume in the document file for PE11-018.
2005 MERCURY MONTEGO Technical Service Bulletin 2012/11/29 NHTSA #: 10051815
Service Bulletin #: CSP-12N03
(PWS): FORD: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. MOMENTARY ENGINE IDLE RPM SURGE MAY BE INTERMITTENT AND MAY OCCUR, DUE TO DEPOSITS BUILDUP IN THROTTLE BODY, AT LOW SPEEDS, WHILE PARKING OR ENTERING DRIVEWAY AND CHECK ENGINE LAMP MAY
2005 MERCURY MONTEGO Technical Service Bulletin 2008/03/01 NHTSA #: 10024829
Service Bulletin #: 08-4-11
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE: TRACTION CONTROL LAMP ON--NO DTC'S PRESENT, OR DTC P1889 IN DIFFERENTIAL ELECTRONIC MODULE (DEM). *NJ
2005 MERCURY MONTEGO Technical Service Bulletin 2007/11/28 NHTSA #: 10023294
Service Bulletin #: 0710
SERVICE BRAKES, AIR: FORD\MERCURY SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CERTAIN 2005 THROUGH 2007 FWD AND AWD FORD FIVE HUNDRED, FREESTYLE AND MERCURY MONTEGO VEHICLES - REAR BRAKE WEAR. ALSO HAVE AN OWNER'S LETTER. *NJ UPDATED
2005 MERCURY MONTEGO Technical Service Bulletin 2007/04/01 NHTSA #: 10022241
Service Bulletin #: 19722
ENGINE AND ENGINE COOLING:ENGINE: MIL WITH DTC P0106 AND/OR P0109. *KB
2005 MERCURY MONTEGO Technical Service Bulletin 2006/08/01 NHTSA #: 10021061
Service Bulletin #: 19312
ELECTRICAL SYSTEM:BATTERY: BATTERY LIGHT ILLUMINATED. *KB
2005 MERCURY MONTEGO Technical Service Bulletin 2006/01/01 NHTSA #: 10020134
Service Bulletin #: 06114
POWER TRAIN:AUTOMATIC TRANSMISSION: CONTINUOUSLY VARIABLE TRANSAXLE (CVT) NOISE DIAGNOSIS. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2006/01/01 NHTSA #: 10019027
Service Bulletin #: 0614
SUSPENSION:REAR: NOISE FROM REAR SUSPENSION - COLD ONLY. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2006/01/01 NHTSA #: 10019914
Service Bulletin #: 06411
POWER TRAIN: OIL LEAK FROM POWER TRANSFER UNIT. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2006/01/01 NHTSA #: 10019951
Service Bulletin #: 0662
DIGITAL INSTRUMENT PANEL: INTERMITTENT INSTRUMENT CLUSTER GAUGE SWEEP/RESET - MULTIPLE WARNING LIGHTS ON - REVERSE LIGHTS ON - VEHICLES BUILT BEFORE 2/17/2006. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2006/01/01 NHTSA #: 10019068
Service Bulletin #: 19005
SUSPENSION:FRONT: GRUNT OR SQUEAK FROM FRONT SUSPENSION DURING FULL LOCK TURNS - SERVICE TIP. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/11/14 NHTSA #: 10018745
Service Bulletin #: 041601
ENGINE AND ENGINE COOLING: WDS COP KIT DIAGNOSTIC TIP - COIL ON PLUG (COP) IGNITION SYSTEMS - ENGINE MISFIRE OR ROUGH RUNNING. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/11/14 NHTSA #: 10018737
Service Bulletin #: 05222
SUSPENSION: NOISE FROM FRONT WHILE TURNING STEERING WHEEL. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/10/07 NHTSA #: 10018066
Service Bulletin #: 05175
ENGINE AND ENGINE COOLING: ENGINE RPM FLUCTUATION AT HIGHWAY CRUISING SPEEDS - VEHICLES BUILT PRIOR TO 8/2/2005. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/10/03 NHTSA #: 10017804
Service Bulletin #: 05197
STRUCTURE:BODY:TRUNK LID : TRUNK LID HARD TO CLOSE. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/09/02 NHTSA #: 10018076
Service Bulletin #: 05L25
POWER TRAIN:AUTOMATIC TRANSMISSION: SPECIAL FIELD ACTION 05L25 - OUTPUT SHAFT SPEED (OSS) SENSOR; TURBINE SHAFT SPEED (TSS) SENSOR; TRANSMISSION FLUID TEMPERATURE (TOT) SENSOR WERE INADVERTENTLY OMITTED FROM THE CALIFORNIA LONG-TERM DEFECTS WARRANTY PARTS TABLE. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/07/01 NHTSA #: 10017862
Service Bulletin #: 18730
POWER TRAIN:AXLE ASSEMBLY: VEHICLES WITH A CVT TRANSAXLE, MAY EXHIBIT A FLUID LEAK FROM THE TRANSAXLE OIL PAN AREA. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/06/07 NHTSA #: 10012948
Service Bulletin #: 0532
SUSPENSION:REAR: SQUEAK/CLUNK NOISE FROM REAR LOWER CONTROL ARM - VEHICLES BUILT 7/12/2004 THROUGH 9/21/2004. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/04/01 NHTSA #: 10017904
Service Bulletin #: 05419
COMMUNICATIONS:BACK UP ALARM: FALSE PARKING AID WARNINGS. *TT
2005 MERCURY MONTEGO Technical Service Bulletin 2005/03/21 NHTSA #: 10014682
Service Bulletin #: 0551
ELECTRICAL SYSTEM: INTERMITTENT HEADLAMP FLICKER WITH NO KEY IN THE IGNITION - VEHICLES BUILT BEFORE 2/21/2005. *TT
 
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